CVE-2026-31483

In the Linux kernel, the following vulnerability has been resolved:

s390/syscalls: Add spectre boundary for syscall dispatch table

The s390 syscall number is directly controlled by userspace, but does
not have an array_index_nospec() boundary to prevent access past the
syscall function pointer tables.

More information : https://git.kernel.org/stable/c/1cb9c7bc9025c637564fabc7fcc3c9343949e310